Low profile safety relay with forcibly guided double contacts FEATURES. Relay height, 14.5mm. 4a2b

Size: px

Start display at page:

Download "Low profile safety relay with forcibly guided double contacts FEATURES. Relay height, 14.5mm. 4a2b"

Kellie Phillips
5 years ago
Views:

1 Low profile safety relay with forcibly guided double contacts SFN4D RELAY FEATURES Relay complies with EN 020, Type B. Polarized magnet system with snap action function Tolerance ±0.3 mm Weight approx. 42 g SPECIFICATIONS Length: 3.0 Extremely small total power loss - Nominal coil power consumption of 30mW - Double contacts with low contact resistance, e.g. [(A) 2 2.m ] 4NO = 30mW Relay height,.mm Reinforced insulation according to EN 01 - between coil-contacts and contacts-contacts - rated voltage of the circuits 230 / 400V or 2 / 40Vrms - rated impulse voltage of kv clearance. mm - pollution degree 2 creepage distance.mm Contact Contact configuration (a = normally open / NO, b = normally closed / NC) Contact material Contact resistance (initial at V DC, 1A) Typical contact resistance Max. switching capacity Max. switching voltage Min. switching voltage / min. switching current Pick-up / drop-out / bounce time (approx. values at U nominal ) Mechanical life 4a2b AgSnO 2, with Au flash 30m 2.m A/A *1 20V AC 00V AC / DC Reference V / ma 23 / *2 / 2ms ops Characteristics Max. switching frequency (without load) Hz Permissible ambient temperature at nominal *3 power consumption -2 C to 2 C Upper temperature limit C Test voltage: open contact / contact-contact / contact-coil 200 / 4000 / 000V rms Insulation resistance at 00V DC (initial) Shock resistance (11ms) NO/NC *4 20 / 1G Vibration resistance 200 Hz ( Hz, amplitude 2 mm) *4 G Degree of protection RT III * Unit weight 42g Coil Operate / release and holding at 20 C (% of U nominal ) *3 % / 2% min. 4% Pick-up/nominal power consumption / mW Important: Relay characteristics may be influenced by: strong external magnetic fields magnetic conductive materials near the relay narrow top-to-top mounting (printed surface to printed surface) *1 See ELECTRICAL LIFE (Reference Data) *1 on page 2. *2 Without diode *3 See also REFERENCE DATA on page 3. *4 Contact interruption < s * According to EN 1-1: 2004, table 2 ORDERING INFORMATION Ex. SFN4D DC V Coil voltage (DC),,, 1, 1, 21 24, 3, 4, 0 Notes: 1) Standard packing; Tube: pcs. Case 0 pcs. 2) Other coil voltage available upon request ds_0_en_sfn4d: 03D 1

2 COIL DATA (at 20 C) Part number Coil nominal voltage V DC Operate voltage *1 V DC Release voltage *1 Coil resistance V DC ( %, 20 C) SFN4D-DCV SFN4D-DCV SFN4D-DCV SFN4D-DC1V SFN4D-DC1V SFN4D-DC21V SFN4D-DC24V SFN4D-DC3V SFN4D-DC4V SFN4D-DC0V *1 Operate and release voltage at different temperatures, see REFERENCE DATA on page 3, coil voltage characteristics. SWITCHING CAPABILITY Making / breaking capacities according to EN 04--1: 2000, table 4 / ; AC1: A 230V AC / DC: A 24V DC Endurance / overload test according to UL 0 1 edition, sections 42 / 43; A 20V AC / A 24V DC; B300 / R300; File E02 ELECTRICAL LIFE (Reference Data) *1 Voltage Current (A) Load type Frequency Duty cycle No. of contacts No. of ops. 230V AC AC 1 0.2Hz 2% 4, V AC AC 1 0.2Hz 2% 4 200, V AC 2. AC 1 0.2Hz 2% 4 1,00, V AC 0 / AC Hz 20% 3 40,000 24V DC DC 1 0.2Hz 2% 4 2,000,000 20V DC 0.2 DC 0.Hz % 4 >1,000,000 *2 *1 Test conditions: Room temperature, breathing hole closed, dielectric strength according to EN1-1:2004. *2 Has to be confirmed DIMENSIONS Download CAD Data from our Web site. Outer dimensions CAD Data 3.3 Breathing hole Stand-off General tolerance: (2x) (x) (2.1) Projection mode: Schematic (Bottom view) 1 1 PC board pattern (Bottom view) dia., typical value for manual insertion 1. dia., typical value for automatic insertion 2 ds_0_en_sfn4d: 03D

3 REFERENCE DATA Coil voltage characteristics SFN4D 0 0 permissible coil voltage without contact load Coil applied voltage [%] operative range of the coil voltage typical operate and release voltage with the +/-3σ range without preheated coil min. release voltage at the end of the electrical life min. recommended holding voltage Ambient temperature [ o C] Thermic operating range Switching time in relation to coil excitement at 20 C NO contacts simultaneously 4 x A 4 x A 4 x 0A To the right of the curves the relay operates in a temperature range exceeding the stated limit of o C 0 Coil applied voltage [%] Coil applied voltage [%] bbm NC 1 NO Ambient temperature [ o C] Typ. pick-up time [ms] ds_0_en_sfn4d: 03D 3

4 REFERENCE DATA, continued Load limit curve Contact voltage [VDC] W 20 W 200 W W 0 W 0 W 0 W 40 W W W Contact current [A] Time / current characteristic Fuse-link D II A, 00 V operating class gl (A gg) DIN 4 1 Current [A] 0 SFN4D, Contact withstand current glass tube x 20 mm, 20V Fuse-link,3A F (quick acting) IEC 0-2/ Time [Sec] 4 ds_0_en_sfn4d: 03D

Open Open or closed Closed Fully open Open Open or closed Symbol Contact gap 0 Maximum (~1.mm) >0.

5 APPLICATION NOTES The SFN4D Safety Relay SFN4D NC contact - Sub card 1 Armature NO contact -11 Remark: Only NC - monitors all NO contacts! NO contact - Main card 1 Sub card 2 NO contact - 1 NO contact - NC contact 1-1 Legend for interpreting contact conditions Contact NC (Normally Closed) NO (Normally Open) Condition Closed Fully open Open Open or closed Closed Fully open Open Open or closed Symbol Contact gap 0 Maximum (~1.mm) >0.mm (forcibly guided) Not defined 0 Maximum (~1.mm) >0.mm (forcibly guided) Not defined The SFN4D under normal operating conditions Condition Illustration of Relay State Condition of Contacts - Armature in deenergized position. - NC contacts closed. - NO contacts have a contact gap of approx. 1.mm Coil energized. - Armature in energized position. - NO contacts closed. - NC contacts have a contact gap of approx. 1.mm. 1 1 ds_0_en_sfn4d: 03D

6 The SFN4D safety relay with welded contacts Condition Illustration of Relay State Condition of Contacts - NC - welded. - Coil energized. - Armature nearly in deenergized position All NO contacts are forcibly guided. - The NO contact gaps are min. 0.mm. - For NC 1-1, the contact condition is not defined. - NC 1-1 welded. - Coil energized. - Armature nearly in deenergized position All NO contacts are forcibly guided. - The NO contact gaps are min. 0.mm. - For NC -, the contact condition is not defined. - NO -11 welded. - Armature nearly in energized position All (both) NC contacts are forcibly guided. - The NC contact gaps are min. 0.mm. - For all NO contacts, the contact condition is not defined. - NO - welded. - Armature in nearly energized position All (both) NC contacts are forcibly guided. - The NC contact gaps are min. 0.mm. - For all NO contacts, the contact condition is not defined. - NO - welded. - Armature in deenergized position NC 1-1 is closed!! - All non-welded NO contacts show their max. contact gap. - NC - forcibly guided to the welded contact by sub card 1. The contact gap is min. 0.mm. - NO - welded. - Armature in deenergized position NC 1-1 is closed!! - All non-welded NO contacts show their max. contact gap. - NC - forcibly guided to the welded contact by sub card 2. The contact gap is min. 0.mm. ds_0_en_sfn4d: 03D

7 Failure modes, application examples 1)Feedback loop, 2) Self-holding circuit, 3) Safety circuit, 4) Auxiliary contacts SFN4D 1. Self-holding circuit, three safety circuits One contact welded, e.g. NO - of ) 2) 2) 3) 3) 3) 4) One contact welded, e.g. NO -11 of Four safety circuits One contact welded, e.g. NO - of ) 3) 3) 3) 3) 4) (see wiring example, p. ) One contact welded, e.g. NO -11 of Two safety circuits 1 1 Both contacts of one path are welded, e.g. NO - and NO -. A safety circuit needs two paths in this failure mode. The contacts -, -11, and - of interrupt the load ) 3) 3) 4) (see wiring example, p. ) { { Both contacts of one path are welded, e.g. NO - and NO -11. A safety circuit needs two paths in this failure mode. The contacts -, -11, and - of interrupt the load ds_0_en_sfn4d: 03D

8 Wiring for application examples 2.1 and st layer 2nd layer For Cautions for Use, see Relay Technical Information. ds_0_en_sfn4d: 03D

Compact Relay Family with Forcibly Guided Contacts

Compact Relay Family with Forcibly Guided Contacts SF-Y RELAYS -pole ( Form A Form B, Form A Form B) -pole ( Form A Form B, 5 Form A Form B) RoHS compliant FEATURES. Forcibly guided contact structure Relay